when barack obama was re-elected president. remember that campaign? it seems so long ago, so yesterday. now, 2016 is the new 2012. just ask joe biden, when reporters wondered when this was the last time he cast a ballot for himself. or last month at a phone bank. when the insurance rates go down. >> reporter: could the vice president be kidding? unlikely, there's nothing funny about joe biden. he might have hillary clinton to contend with. who can forget last month when she was asked by marie clare magazine if she was running for president. her answer, no, i'm not. you see that. she didn't say, i will not. no, that i am not. clearly, leaving the door wide open. she might as well started printing bumper stickers. even her husband practically announced her intentions. >> i have no earthly idea what she'll decide to do. >> reporter: how about other democrats? keep an eye on martin o'malley of maryland. it's not hard since he keeps turning up on this show, this one and this one. and republicans, paul ryan already ran for president once, according to mitt